{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x25e34f13181f45163caa09ccda52ce5ec531da2f8fb4be9a71a38a396d65affa",
    "signature": "0xf54dac9d3213dc44b1ca41d10e8bcbb531d64e6ab8a85dd442c2caeeb508e397536dd0f28081b2cb5a58e7fd91cd2196594350694403911aea3286c706cb5e181c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}